The Rob Report (From Maui Time)

We have met the enemy, and he is us.

-Walt Kelly’s Pogo

The 1960’s were a time when Cold War politics dictated that Americans live in fear of the Soviets dropping “the big one,” a nuclear bomb. Thousands of families constructed and stocked backyard fallout shelters. Elementary school children drilled “drop and cover” maneuvers beneath their desks.

Fortunately, that bomb never dropped. But, late in the decade there was another explosion of sorts. In 1968, Dr. Paul Ehrlich, a Stanford biologist wrote The Population Bomb, a study of unavoidable consequences of human population growth. Though some have criticized his doomsday predictions of widespread famine and food wars, Ehrlich recently pointed out that the 2.8 billion people we’ve added to the planet since the 3.5 billion already alive in 1968 certainly constitutes an explosion, which continues to degrade the global environment.

I read The Population Bomb a few years later after it published, when I was a senior in high school. It’s one of a half dozen books I’ve read that substantially changed the way I view the world around me. Page by page I read Ehrlich’s work and thought to myself, “Oh my God, we’re screwed.”

Even considering all the recent discussion of renewable energy possibilities for Hawai`i, Maui Electric Company’s (MECO) sudden announcement of plans to construct a $61 million biodiesel refinery was a bit of a bombshell. The proposal, in which MECO teams with BlueEarth Biofuels, LLC, projects a first phase output in 2009 of 40 million gallons of biodiesel fuel, more than half of the 73 million gallons of diesel MECO used in 2005 to run its generators. While the facility would utilize imported palm oil, it aspires to set up a nonprofit public trust to encourage the growth of local fuel crops.

If all goes well, in just a few years we’ll be able to crank up our air-conditioning, set out more strings of holiday lights and heat our Jacuzzis… all guilt-free. But, closer examination of the MECO/BlueEarth proposal raises questions.

Lots of questions.

BlueEarth Maui Biodiesel registered as a Limited Liability Corporation with the Hawai`i Department of Commerce and Consumer Affairs Business Registration Division on Jan. 29, 2007. BlueEarth’s two principle partners, Robert Wellington and Landis Maez, live in Texas and Arizona, respectively. Is there a local connection?

The Maui News recently reported that BlueEarth is building a plant in Mason City, Iowa capable of producing 30 million gallons of biofuel. But the Iowa Renewable Fuels Association website reports that plant is being constructed by Freedom Fuels, with general contracting by NewMech of St. Paul, Minnesota.

How did MECO select BlueEarth, a new company with no track record in Hawai`i and possibly anywhere else? By what process did they deem them worthy of this joint venture that is seeking legislative approval to receive $59 million in special purpose revenue bonds? Isn’t that the largest request of public funds since the proposed Superferry?

Also on Jan. 29, 2007, Raymond Sweeney Jr. of Sweeney Communications in Honolulu registered as a lobbyist for the BlueEarth Biofuels office Frisco, Texas. Senate Bill 1718, authorizing the revenue bonds, has already sailed through the Energy and Environment Committee, and soon will face a hearing with the Ways and Means Committee, chaired by Maui’s Roz Baker.

Henry Curtis of Life of the Land is perhaps the state’s leading renewable energy advocate. In his testimony on SB 1718, Curtis asked, “Who is applying? Why do they need money? What are the environmental, cultural, and social impacts? Or are we giving away money to anyone who wants to invest in an energy project which begins in ‘bio’?”

Life of the Land, advocating for the people and the `aina since 1970, has a stated mission of preservation and protection “through sustainable land use and energy policies, and by promoting open government through research, education, advocacy, and litigation.” They are currently involved in a contested case hearing with Hawai`i Electric Company over that agency’s proposed 110 megawatt generating station at Campbell Industrial Park.

Will the “rush to renewables” allow us to make intelligent, sustainable choices, or are we heading down a feel-good path, while adversely impacting the environment in unseen ways?

In a Dec. 6, 2005 commentary in The Guardian, George Monbiot maintains that palm oil is worse than the fossil fuel it looks to replace. Turns out there’s a global rush to use palm oil-derived diesel, with commodity traders listed in such diverse locales as Russia, South Korea, India and Dubai. But palm oil plantations in Malaysia, Sumatra, Borneo and Thailand have faced harsh environmental scrutiny for destroying millions of hectares of rainforests.

A 2005 report by Friends of the Earth, titled Oil for Apes Scandal, found that 90 percent of orangutan habitat in Indonesia and Maylasia had been destroyed, placing the apes at the edge of extinction. Simply imperiled are the Sumatran tiger and rhinoceros, gibbons, tapirs and the Asian elephant.

A U.S. embassy energy news posting from Jakarta, Indonesia states that, “North Sumatra has avoided the haze from fires used to clear the forests for oil palm cultivation, and the oil palm plantations provide a buffer for environmentally protected areas.” A North Sumatran environmental official noted that heating the oil palm nut to extract the crude palm oil is still a dirty business, as is burning the empty husks.

BlueEarth claims they will buy palm oil imported from the Pacific Rim and in South America from suppliers “that practice sustainable palm production.” By 2011, they expect their refinery to produce 120 million gallons yearly, enough to provide fuel for electric generation on Oahu and the Big Island.

But to what extent would this giant venture employ local labor in the construction or in regular operations? Would something of this scope and size encourage grassroots biofuel agricultural production or just benefit traditional large plantation owners and spark squabbles over water allocation?

Moreover, can MECO partner in building this facility, then buy the fuel from itself without going through a competitive bidding process? Would such a request to provide biofuels contain incentives for locally produced, not imported fuels?

Representative Mina Morita of Kauai raised an even more essential question at the Governor’s Biofuel Summit last August. She asked what, with all this talk of using agricultural lands to raise crops to produce electricity, are we doing in terms of food security?

There was no answer—just a hush in the Hawai`i Convention Center’s meeting room. But, shouldn’t there be an equally ambitious effort to offset our state’s 85 percent dependence on imported food?

It seems that the earlier model of the family farm and small towns made a lot more sense than our current agribusiness-dominated global economy. As Kelly King of Pacific Biodiesel reminded a panel audience recently, all sustainability is local. In fact, King advocates a community model of local biofuel production far different than the recent bio-bomb dropped by the big state utility.

In their closing argument against Hawai`i Electric’s proposed new generating plant, Life of the Land’s Curtis called for alternatives to combustion—even of biofuels—which produce less harmful emissions. He advocated Ocean Thermal Energy Conversion, seawater air conditioning and wave energy, which is currently being tested off Kaneohe Bay on Oahu. Curtis reminded us that all forms of energy production have environmental impacts.

Much as we’d like to blame others for all the challenges we face in the 21st century, we need to realize that we are the problem. Every dire environmental problem, from global warming to rainforest destruction, over-fishing to lack of fresh water, is traceable to the rapidly increasing number of humans impacting the planet. This year alone, an estimated 133 million babies are expected to be born.

Can we learn to live without our SUVs, big screen TVs and shipped-in luxuries? Will we convince each other to live in a way that minimizes environmental degradation?

Lots of big questions, indeed.

Biodiesel & Ethanol Net Energy

Read Rob Parsons Article to which DuByne is responding
Read Rob Parsons Response to the DuByne letter

 

Letter to Maui Time
by David DuByne
April 5, 2007
(Headings and empahasis added by webmaster)

Oilwell Production is Down

To follow up on the article “Potential Energy” by Rob Parsons in your Feb. 15, 2007 edition, we first need to understand why the switch to ethanol is happening. It’s called oil depletion or peak oil. Inside an oil well, just as in a glass of water there is only so much liquid. Since the pumps are so much better these days at getting oil out of the ground we are emptying many of the world’s oil wells faster than we are finding new oil to replace what is taken out worldwide year after year. For example in Mexico, a well called Cantarell is the second largest in the world after Garwar in Saudi Arabia, the world’s largest.

Three years ago Cantarell well produced 2.2 million barrels of oil per day, this year it is down to 1.5 million and by the end of 2007 it is predicted by Pemex State Oil Company to drop to 900,000 barrels per day. This case is not only limited to Mexico, it is happening in 34 of the 47 countries that sell oil on the world market every day.

This is exactly why the change over to ethanol and bio-diesel is occurring, for no other reason than we are backed into a corner with no other option. Currently there is no substitute to power our cars, ships, airplanes and trucks that deliver what we need to keep our lives intact. Solar, wind, nuclear, bio-mass gasification, hydroelectric power or coal can never power the vehicles we use to keep the economies of the world moving and goods delivered. We have fossil fuels and the new replacements of ethanol and oils from plants as replacements for transportation and farm machinery, period.

Ethanol – Energy Returned on Energy (EROEI)

Now let’s talk about ethanol. It’s mainly produced from corn but other crops can be used such as sugarcane, rice and tapioca. It takes energy to make energy, and the amount of energy you must invest in the process of making ethanol is called EROEI: Energy Returned On Energy Invested.

One gallon net production of corn ethanol requires three gallons of input for that production because corn ethanol has an EROEI of 1.34 to one. When you multiply the extra energy gained from production of each barrel by three, you get 1.02, or one extra barrel of positively gained energy. It takes three barrels of oil to make one barrel of ethanol (0.34 times three equals 1.02).[webmaster note: He’s saying that 3 barrels of oil makes 4 barrels of corn ethanol]

Sugarcane has an EROEI of eight. One barrel of energy input to turn sugarcane into ethanol gives eight positive barrels of usable energy. In addition, corn ethanol has less energy density (one gallon of ethanol produces 62 percent as much heat as one gallon of gasoline) so 1.38 gallons of ethanol is needed to equal one gallon of gasoline energy. So in reality one barrel isn’t really one barrel, it is a barrel in liquid volume, but not in energy density.

The U.S. Department of Agriculture (USDA) projects that ethanol distilleries will require only 60 million tons of corn from the 2008 harvest. But the Earth Policy Institute (EPI) estimates that ethanol distilleries will need 139 million tons of corn, more than twice as much. The U.S. Department of Agriculture (USDA) relies heavily on the Renewable Fuels Association (RFA), a trade group, for data on ethanol distilleries under construction.

In actuality there are four firms that collect and publish data on U.S. ethanol distilleries under construction. RFA is the one most frequently cited, but the other three firms are Europe-based F.O. Licht, the publisher of World Ethanol and Bio-fuels Report; BBI International, which publishes Ethanol Producer Magazine; and the American Coalition for Ethanol (ACE), publisher of Ethanol Today.

Unfortunately, the lists of plants under construction maintained by RFA, BBI, and ACE are not complete. Each contains some plants that are not on the other lists. Drawing on these three lists and on bi-weekly reports from F.O. Licht, EPI has compiled a more complete master list. For example, EPI shows 79 plants under construction, RFA lists 62 plants.

According to the EPI compilation, the 116 ethanol plants in production on December 31, 2006, were using 53 million tons of grain per year, while the 79 plants under construction, mostly larger facilities, will use 51 million tons of grain when they come online. Expansions of 11 existing plants will use another eight million tons of grain (one ton of corn equals 39.4 bushels, which equals 110 gallons of ethanol).

In addition, easily 200 ethanol plants were in the planning stage at the end of 2006. If these translate into construction starts between January 1 and June 30, 2007, at the same rate that plants did during the final six months of 2006, then an additional three billion gallons of capacity requiring 27 million more tons of grain will likely come online by Sept. 1, 2008, the start of the 2008 harvest year. This raises the corn needed for distilleries to 139 million tons, half the 2008 harvest projected by USDA. This would yield nearly 15 billion gallons of ethanol, satisfying 6 percent of U.S. auto fuel needs.

This diversion of the world’s leading grain crop for the production of fuel will affect food prices everywhere. As the world corn price rises, so do those of wheat and rice for human consumption and sorghum, barley and millet for animal feed as markets look to other crops as replacements, people and animals still need to eat. With traditional animal feed from corn becoming more expensive look for dairy, meat and poultry prices to rise along with all human and animal consumption grains, starting now!

Let’s jump to 2015: Corn-based ethanol production would reach 31.5 billion gallons per year, or about 20 percent of projected U.S. fuel consumption in 2015. U.S. corn production 2006 was 11 billion bushels. Ethanol yield is approximately 2.5 gallons per bushel (39.4 bushels of corn equals 110 gallons of ethanol).

Ethanol has less energy density (one gallon of ethanol produces 62 percent as much heat as one gallon of gasoline) so 25 billion multiplied by 0.62 equals 15.8 billion gallons of gasoline energy, equivalent to about 10 percent or half the 20 percent Bush wants so these production numbers have to be doubled.

Sugarcane Better Than Corn for Ethanol

Keep in mind the grain it takes to fill a 25-gallon tank with ethanol just once will feed one person for a whole year. This puts Hawai`i in a unique position for ethanol production from sugarcane, which has a high EROEI and provides a domestic fuel source for the islands, with a possibility to export excess ethanol back to the mainland.

With all of this massive energy input to generate six percent of U.S. fuel needs next year, consider we could save that six percent by simple conservation measures. The wall to breakdown that exists in this philosophy is conservation equals non-consumption, the 180-degree opposite of corporations whose philosophy is consume. Thanks Rob for getting the awareness started.

-David DuByne, former Maui resident now working on bio-fuel
development projects in Thailand

Read Rob Parsons Response to the DuByne letter
Read Rob Parsons Article to which DuByne is responding

Palm Oil

From Environmental Management for Palm Oil Mill by A. H-Kittikun et al.

One ton of fresh fruit bunches (FFB) composed of 230-250 kg of empty fruit bunch (EFB), 130-150 kg of fiber, 60-65 kg of shell and 55-60 kg of kernel and 160-200 kg of crude oil.

Palm oil mill effluent (POME) is the mixture of high polluted effluent (from sterilizer and oil room) and low polluted effluent (steam condensate, cooling water, boiler discharge and sanitary effluent).

Jatropha Seeds are toxic to wildlife
Oil Palm Fruit

The most appropriate secondary treatment for POME is biological digestion in which the combination of anaerobic and aerobic ponds is used presently. Spillage of POME into ground water or into surface water must be avoided.

The mills generate by-products and liquid wastes which may have a significant impact on the environment if  they are not dealt with properly.

Jatropha Tree
Palm Oil Tree

From Favorable Palm Oil Production for Cote d’Ivoire

Oil palms require from 59-157 inches of water per year. Mature palm trees reach peak production or yields after 12-years of growth and need to be replaced after 25-30 years due to lower production potential caused by aging.

Oil Palm Plantation in Malaysia

jatropha

Jatropha Tree
Jatropha Being Monitored for Water Usage

From www.scienceinafrica.co.za which is conducting water usage studies on Jatropha in Africa.

The Jatropha curcas tree, originates from Mexico. It’s oil-producing seeds (30%-35% oil) and entire plant are inedible (toxic) to humans, and most animals and birds. It produces for 50 years.

A small tree or shrub with a maximum height of 5 m, Jatropha curcas reportedly grows readily in areas of low rainfall (from 250 mm a year) and in poor soils, however, yield is strongly affected by growing conditions. The trees are easy to establish (from seeds or cuttings), grow relatively quickly (producing seed after their second year) and are hardy to drought.

There are several concerns around the affect of such a species on the coutry’s already scarce water resources as well as the possible invasive nature of the plant.

Jatropha Seeds are toxic to wildlife
Toxic Jatrpoha Seeds

It requires a minimum of 25 inches of rainfall but prefers 69 inches of rainfall. Seed production ranges from about 2 tons per hectare per year to over 12.5t/ha/year, after five years of growth. This range in production may be attributable to the amount of water it receives. See www.jatrophabiodiesel.org .

Maui growers would be competing with India where jatropha workers are paid 19 cents per hour.

The invasive and poisonous nature of this plant would most likely result in bird and animal poisonings on Maui.

Biofuel Roadmap Barriers

by Alice Friedemann
Released April 10, 2007

“The nation that destroys its soil destroys itself.” – President Franklin D. Roosevelt

Peak Soil: Why Cellulosic ethanol and other Biofuels are Not Sustainable and are a Threat to America’s National Security

 Part 1. The Dirt on Dirt.
 Part 2. The Poop on Ethanol: Energy Returned on Energy Invested (EROEI)
 Part 3. Biofuel is a Grim Reaper.
 Part 4. Biodiesel: Can we eat enough French Fries?
 Part 5. If we can’t drink and drive, then burn baby burn. – Energy Crop Combustion
 Part 6. The problems with Cellulosic Ethanol could drive you to drink.
 Part 7. Where do we go from here?
 Appendix
 Department of Energy’s Biofuel Roadmap Barriers
 References

Editor’s note: There are many serious problems with biofuels, especially on a massive scale, and it appears from this report that they cannot be surmounted. So let the truth of Alice Friedemann’s meticulous and incisive diligence wash over you and rid you of any confusion or false hopes. The absurdity and destructiveness of large scale biofuels are a chance for people to eventually even reject the internal combustion engine and energy waste in general. One can also hazard from this report that bioplastics, as well, cannot make it in a big way.

The author looks ahead to post-petroleum living with considered conclusions: “Biofuels have yet to be proven viable, and mechanization may not be a great strategy in a world of declining energy.” And, “…only a small amount of biomass (is) unspoken for” by today’s essential economic and ecological activities. To top it off, she points out, “Crop production is reduced when residues are removed from the soil. Why would farmers want to sell their residues?” Here’s an Oh- god-she-nailed-it zinger: “As prices of fertilizer inexorably rise due to natural gas depletion, it will be cheaper to return residues to the soil than to buy fertilizer.” Looking further along than most of us, Alice has among her conclusions: “It’s time to start increasing horse and oxen numbers, which will leave even less biomass for biorefineries.” – JL

Part 1. The Dirt on Dirt.

Ethanol is an agribusiness get-rich-quick scheme that will bankrupt our topsoil.

Nineteenth century western farmers converted their corn into whiskey to make a profit (Rorabaugh 1979). Archer Daniels Midland, a large grain processor, came up with the same scheme in the 20th century. But ethanol was a product in search of a market, so ADM spent three decades relentlessly lobbying for ethanol to be used in gasoline. Today ADM makes record profits from ethanol sales and government subsidies (Barrionuevo 2006).

The Department of Energy hopes to have biomass supply 5% of the nation’s power, 20% of transportation fuels, and 25% of chemicals by 2030. These combined goals are 30% of the current petroleum consumption (DOE Biomass Plan, DOE Feedstock Roadmap).

Fuels made from biomass are a lot like the nuclear powered airplanes the Air Force tried to build from 1946 to 1961, for billions of dollars. They never got off the ground. The idea was interesting — atomic jets could fly for months without refueling. But the lead shielding to protect the crew and several months of food and water was too heavy for the plane to take off. The weight problem, the ease of shooting this behemoth down, and the consequences of a crash landing were so obvious, it’s amazing the project was ever funded, let alone kept going for 15 years.

Biomass fuels have equally obvious and predictable reasons for failure. Odum says that time explains why renewable energy provides such low energy yields compared to non-renewable fossil fuels. The more work left to nature, the higher the energy yield, but the longer the time required. Although coal and oil took millions of years to form into dense, concentrated solar power, all we had to do was extract and transport them (Odum 1996)

With every step required to transform a fuel into energy, there is less and less energy yield. For example, to make ethanol from corn grain, which is how all U.S. ethanol is made now, corn is first grown to develop hybrid seeds, which next season are planted, harvested, delivered, stored, and preprocessed to remove dirt. Dry-mill ethanol is milled, liquefied, heated, saccharified, fermented, evaporated, centrifuged, distilled, scrubbed, dried, stored, and transported to customers (McAloon 2000).

Fertile soil will be destroyed if crops and other “wastes” are removed to make cellulosic ethanol.

“We stand, in most places on earth, only six inches from desolation, for that is the thickness of the topsoil layer upon which the entire life of the planet depends” (Sampson 1981).

Loss of topsoil has been a major factor in the fall of civilizations (Sundquist 2005 Chapter 3, Lowdermilk 1953, Perlin 1991, Ponting 1993). You end up with a country like Iraq, formerly Mesopotamia, where 75% of the farm land became a salty desert.

Fuels from biomass are not sustainable, are ecologically destructive, have a net energy loss, and there isn’t enough biomass in America to make significant amounts of energy because essential inputs like water, land, fossil fuels, and phosphate ores are limited.

Soil Science 101 – There Is No “Waste” Biomass

Long before there was “Peak Oil”, there was “Peak Soil”. Iowa has some of the best topsoil in the world. In the past century, half of it’s been lost, from an average of 18 to 10 inches deep (Pate 2004, Klee 1991).

Productivity drops off sharply when topsoil reaches 6 inches or less, the average crop root zone depth (Sundquist 2005).

Crop productivity continually declines as topsoil is lost and residues are removed. (Al-Kaisi May 2001, Ball 2005, Blanco-Canqui 2006, BOA 1986, Calviño 2003, Franzleubbers 2006, Grandy 2006, Johnson 2004, Johnson 2005, Miranowski 1984, Power 1998, Sadras 2001, Troeh 2005, Wilhelm 2004).

On over half of America’s best crop land, the erosion rate is 27 times the natural rate, 11,000 pounds per acre (NCRS 2006). The natural, geological erosion rate is about 400 pounds of soil per acre per year (Troeh 2005). Some is due to farmers not being paid enough to conserve their land, but most is due to investors who farm for profit. Erosion control cuts into profits.

Erosion is happening ten to twenty times faster than the rate topsoil can be formed by natural processes (Pimentel 2006). That might make the average person concerned. But not the USDA — they’ve defined erosion as the average soil loss that could occur without causing a decline in long term productivity.

Troeh (2005) believes that the tolerable soil loss (T) value is set too high, because it’s based only on the upper layers — how long it takes subsoil to be converted into topsoil. T ought to be based on deeper layers – the time for subsoil to develop from parent material or parent material from rock. If he’s right, erosion is even worse than NCRS figures.

Erosion removes the most fertile parts of the soil (USDA-ARS). When you feed the soil with fertilizer, you’re not feeding plants; you’re feeding the biota in the soil. Underground creatures and fungi break down fallen leaves and twigs into microscopic bits that plants can eat, and create tunnels air and water can infiltrate. In nature there are no elves feeding (fertilizing) the wild lands. When plants die, they’re recycled into basic elements and become a part of new plants. It’s a closed cycle. There is no bio-waste.

Soil creatures and fungi act as an immune system for plants against diseases, weeds, and insects – when this living community is harmed by agricultural chemicals and fertilizers, even more chemicals are needed in an increasing vicious cycle (Wolfe 2001).

There’s so much life in the soil, there can be 10 “biomass horses” underground for every horse grazing on an acre of pasture (Wardle 2004). If you dove into the soil and swam around, you’d be surrounded by miles of thin strands of mycorrhizal fungi that help plant roots absorb more nutrients and water, plus millions of creatures, most of them unknown. There’d be thousands of species in just a handful of earth –- springtails, bacteria, and worms digging airy subways. As you swam along, plant roots would tower above you like trees as you wove through underground skyscrapers.

Plants and creatures underground need to drink, eat, and breathe just as we do. An ideal soil is half rock, and a quarter each water and air. When tractors plant and harvest, they crush the life out of the soil, as underground apartments collapse 9/11 style. The tracks left by tractors in the soil are the erosion route for half of the soil that washes or blows away (Wilhelm 2004).

Corn Biofuel (i.e. butanol, ethanol, biodiesel) is especially harmful because:

 Row crops such as corn and soy cause 50 times more soil erosion than sod crops [e.g., hay] (Sullivan 2004) or more (Al-Kaisi 2000), because the soil between the rows can wash or blow away. If corn is planted with last year’s corn stalks left on the ground (no-till), erosion is less of a problem, but only about 20% of corn is grown no-till. Soy is usually grown no-till, but insignificant residues to harvest for fuel.
 Corn uses more water, insecticide, and fertilizer than most crops (Pimentel 2003). Due to high corn prices, continuous corn (corn crop after corn crop) is increasing, rather than rotation of nitrogen fixing (fertilizer) and erosion control sod crops with corn.
 The government has studied the effect of growing continuous corn, and found it increases eutrophication by 189%, global warming by 71%, and acidification by 6% (Powers 2005).
 Farmers want to plant corn on highly-erodible, water protecting, or wildlife sustaining Conservation Reserve Program land. Farmers are paid not to grow crops on this land. But with high corn prices, farmers are now asking the Agricultural Department to release them from these contracts so they can plant corn on these low-producing, environmentally sensitive lands (Tomson 2007).
 Crop residues are essential for soil nutrition, water retention, and soil carbon. Making cellulosic ethanol from corn residues — the parts of the plant we don’t eat (stalk, roots, and leaves) – removes water, carbon, and nutrients (Nelson, 2002, McAloon 2000, Sheehan, 2003).

These practices lead to lower crop production and ultimately deserts. Growing plants for fuel will accelerate the already unacceptable levels of topsoil erosion, soil carbon and nutrient depletion, soil compaction, water retention, water depletion, water pollution, air pollution, eutrophication, destruction of fisheries, siltation of dams and waterways, salination, loss of biodiversity, and damage to human health (Tegtmeier 2004).

Why are soil scientists absent from the biofuels debate?

I asked 35 soil scientists why topsoil wasn’t part of the biofuels debate. These are just a few of the responses from the ten who replied to my off-the-record poll (no one wanted me to quote them, mostly due to fear of losing their jobs):

 “I have no idea why soil scientists aren’t questioning corn and cellulosic ethanol plans. Quite frankly I’m not sure that our society has had any sort of reasonable debate about this with all the facts laid out. When you see that even if all of the corn was converted to ethanol and that would not provide more than 20% of our current liquid fuel use, it certainly makes me wonder, even before considering the conversion efficiency, soil loss, water contamination, food price problems, etc.”
 “Biomass production is not sustainable. Only business men and women in the refinery business believe it is.”
 “Should we be using our best crop land to grow gasohol and contribute further to global warming? What will our children grow their food on?”
 “As agricultural scientists, we are programmed to make farmers profitable, and therefore profits are at the top of the list, and not soil, family, or environmental sustainability”.
 “Government policy since WWII has been to encourage overproduction to keep food prices down (people with full bellies don’t revolt or object too much). It’s hard to make a living farming commodities when the selling price is always at or below the break even point. Farmers have had to get bigger and bigger to make ends meet since the margins keep getting thinner and thinner. We have sacrificed our family farms in the name of cheap food. When farmers stand to make few bucks (as with biofuels) agricultural scientists tend to look the other way”.
 “You are quite correct in your concern that soil science should be factored into decisions about biofuel production. Unfortunately, we soil scientists have missed the boat on the importance of soil management to the sustainability of biomass production, and the long-term impact for soil productivity.”

This is not a new debate. Here’s what scientists had to say decades ago:

Removing “crop residues…would rob organic matter that is vital to the maintenance of soil fertility and tilth, leading to disastrous soil erosion levels. Not considered is the importance of plant residues as a primary source of energy for soil microbial activity. The most prudent course, clearly, is to continue to recycle most crop residues back into the soil, where they are vital in keeping organic matter levels high enough to make the soil more open to air and water, more resistant to soil erosion, and more productive” (Sampson 1981).

“…Massive alcohol production from our farms is an immoral use of our soils since it rapidly promotes their wasting away. We must save these soils for an oil-less future” (Jackson 1980).

Natural Gas in Agriculture

When you take out more nutrients and organic matter from the soil than you put back in, you are “mining” the topsoil. The organic matter is especially important, since that’s what prevents erosion, improves soil structure, health, water retention, and gives the next crop its nutrition. Modern agriculture only addresses the nutritional component by adding fossil-fuel based fertilizers, and because the soil is unhealthy from a lack of organic matter, copes with insects and disease with oil-based pesticides.

“Fertilizer energy” is 28% of the energy used in agriculture (Heller, 2000). Fertilizer uses natural gas both as a feedstock and the source of energy to create the high temperatures and pressures necessary to coax inert nitrogen out of the air (nitrogen is often the limiting factor in crop production). This is known as the Haber-Bosch process, and it’s a big part of the green revolution that made it possible for the world’s population to grow from half a billion to 6.5 billion today (Smil 2000, Fisher 2001).

Our national security is at risk as we become dependent on unstable foreign states to provide us with increasingly expensive fertilizer. Between 1995 and 2005 we increased our fertilizer imports by more than 148% for Anhydrous Ammonia, 93% for Urea (solid), and 349 % of other nitrogen fertilizers (USDA ERS). Removing crop residues will require large amounts of imported fertilizer from potential cartels, potentially so expensive farmers won’t sell crops and residues for biofuels.

Improve national security and topsoil by returning residues to the land as fertilizer. We are vulnerable to high-priced fertilizer imports or “food for oil”, which would greatly increase the cost of food for Americans.

Agriculture competes with homes and industry for fast depleting North American natural gas. Natural gas price increases have already caused over 280,000 job losses (Gerard 2006). Natural gas is also used for heating and cooking in over half our homes, generates 15% of electricity, and is a feedstock for thousands of products.

Return crop residues to the soil to provide organic fertilizer, don’t increase the need for natural gas fertilizers by removing crop residues to make cellulosic biofuels.

Part 2. The Poop on Ethanol: Energy Returned on Energy Invested (EROEI)

To understand the concept of EROEI, imagine a magician doing a variation on the rabbit-out-of-a-hat trick. He strides onstage with a rabbit, puts it into a top hat, and then spends the next five minutes pulling 100 more rabbits out. That is a pretty good return on investment!

Oil was like that in the beginning: one barrel of oil energy was required to get 100 more out, an Energy Returned on Energy Invested of 100:1.

When the biofuel magician tries to do the same trick decades later, he puts the rabbit into the hat, and pulls out only one pooping rabbit. The excrement is known as byproduct or coproduct in the ethanol industry.

Studies that show a positive energy gain for ethanol would have a negative return if the byproduct were left out (Farrell 2006). Here’s where byproduct comes from: if you made ethanol from corn in your back yard, you’d dump a bushel of corn, two gallons of water, and yeast into your contraption. Out would come 18 pounds of ethanol, 18 pounds of CO2, and 18 pounds of byproduct – the leftover corn solids.

Patzek and Pimentel believe you shouldn’t include the energy contained in the byproduct, because you need to return it to the soil to improve nutrition and soil structure (Patzek June 2006). Giampetro believes the byproduct should be treated as a “serious waste disposal problem and … an energy cost”, because if we supplied 10% of our energy from biomass, we’d generate 37 times more livestock feed than is used (Giampetro 1997).

It’s even worse than he realized – Giampetro didn’t know most of this “livestock feed” can’t be fed to livestock because it’s too energy and monetarily expensive to deliver – especially heavy wet distillers byproduct, which is short-lived, succumbing to mold and fungi after 4 to 10 days. Also, byproduct is a subset of what animals eat. Cattle are fed byproduct in 20% of their diet at most. Iowa’s a big hog state, but commercial swine operations feed pigs a maximum of 5 to 10% byproduct (Trenkle 2006; Shurson 2003).

Worst of all, the EROEI of ethanol is 1.2:1 or 1.2 units of energy out for every unit of energy in, a gain of “.2”. The “1” in “1.2” represents the liquid ethanol. What is the “.2” then? It’s the rabbit feces – the byproduct. So you have no ethanol for your car, because the liquid “1” needs to be used to make more ethanol. That leaves you with just the “.2” — a bucket of byproduct to feed your horse – you do have a horse, don’t you? If horses are like cattle, then you can only use your byproduct for one-fifth of his diet, so you’ll need four supplemental buckets of hay from your back yard to feed him. No doubt the byproduct could be used to make other things, but that would take energy.

Byproduct could be burned, but it takes a significant amount of energy to dry it out, and requires additional handling and equipment. More money can be made selling it wet to the cattle industry, which is hurting from the high price of corn. Byproduct should be put back into the ground to improve soil nutrition and structure for future generations, not sold for short-term profit and fed to cattle who aren’t biologically adapted to eating corn.

The boundaries of what is included in EROEI calculations are kept as narrow as possible to reach positive results.

Researchers who find a positive EROEI for ethanol have not accounted for all of the energy inputs. For example, Shapouri admits the “energy used in the production of … farm machinery and equipment…, and cement, steel, and stainless steel used in the construction of ethanol plants, are not included”. (Shapouri 2002). Or they assign overstated values of ethanol yield from corn (Patzek Dec 2006). Many, many, other inputs are left out.

Patzek and Pimentel have compelling evidence showing that about 30 percent more fossil energy is required to produce a gallon of ethanol than you get from it. Their papers are published in peer-reviewed journals where their data and methods are public, unlike many of the positive net energy results.

Infrastructure. Current EROEI figures don’t take into account the delivery infrastructure that needs to be built. There are 850 million combustion engines in the world today. Just to replace half the 245 million cars and light trucks in the United States with E85 vehicles will take 12-15 years, It would take over $544 million dollars of delivery ethanol infrastructure (Reynolds 2002 case B1) and $5 to $34 billion to revamp 170,000 gas stations nationwide (Heinson 2007).

The EROEI of oil when we built most of the infrastructure in this country was about 100:1, and it’s about 25:1 worldwide now. Even if you believe ethanol has a positive EROEI, you’d probably need at least an EROEI of at least 5 to maintain modern civilization (Hall 2003). A civilization based on ethanol’s “.2” rabbit poop would only work for coprophagous (dung-eating) rabbits.

Of the four articles that showed a positive net energy for ethanol in Farrells 2006 Science article, three were not peer-reviewed. The only positive peer-reviewed article (Dias De Oliveira, 2005) states “The use of ethanol as a substitute for gasoline proved to be neither a sustainable nor an environmentally friendly option” and the “environmental impacts outweigh its benefits”. Dias De Oliveria concluded there’d be a tremendous loss of biodiversity, and if all vehicles ran on E85 and their numbers grew by 4% per year, by 2048, the entire country, except for cities, would be covered with corn.

Part 3. Biofuel is a Grim Reaper.

The energy to remediate environmental damage is left out of EROEI calculations.

Global Warming

Soils contain twice the amount of carbon found in the atmosphere, and three times more carbon than is stored in all the Earth’s vegetation (Jones 2006).

Climate change could increase soil loss by 33% to 274%, depending on the region (O’Neal 2005).

Intensive agriculture has already removed 20 to 50% of the original soil carbon, and some areas have lost 70%. To maintain soil C levels, no crop residues at all could be harvested under many tillage systems or on highly erodible lands, and none to a small percent on no-till, depending on crop production levels (Johnson 2006).

Deforestation of temperate hardwood forests, and conversion of range and wetlands to grow energy and food crops increases global warming. An average of 2.6 million acres of crop land were paved over or developed every year between 1982 and 2002 in the USA (NCRS 2004). The only new crop land is forest, range, or wetland.

Rainforest destruction is increasing global warming. Energy farming is playing a huge role in deforestation, reducing biodiversity, water and water quality, and increasing soil erosion. Fires to clear land for palm oil plantations are destroying one of the last great remaining rainforests in Borneo, spewing so much carbon that Indonesia is third behind the United States and China in releasing greenhouse gases. Orangutans, rhinos, tigers and thousands of other species may be driven extinct (Monbiot 2005). Borneo palm oil plantation lands have grown 2,500% since 1984 (Barta 2006). Soybeans cause even more erosion than corn and suffer from all the same sustainability issues. The Amazon is being destroyed by farmers growing soybeans for food (National Geographic Jan 2007).and fuel (Olmstead 2006).

Biofuel from coal-burning biomass factories increases global warming (Farrell 2006). Driving a mile on ethanol from a coal-using biorefinery releases more CO2 than a mile on gasoline (Ward 2007). Coal in ethanol production is seen as a way to displace petroleum (Farrell 2006, Yacobucci 2006) and it’s already happening (Clayton 2006).

Current and future quantities of biofuels are too minisucle to affect global warming (ScienceDaily 2007).

Surface Albedo. “How much the sun warms our climate depends on how much sunlight the land reflects (cooling us), versus how much it absorbs (heating us). A plausible 2% increase in the absorbed sunlight on a switch grass plantation could negate the climatic cooling benefit of the ethanol produced on it. We need to figure out now, not later, the full range of climatic consequences of growing cellulose crops” (Harte 2007).

Eutrophication.

Farm runoff of nitrogen fertilizers has contributed to the hypoxia (low oxygen) of rivers and lakes across the country and the dead zone in the Gulf of Mexico. Yet the cost of the lost shrimp and fisheries and increased cost of water treatment are not subtracted from the EROEI of ethanol.

Soil Erosion

Corn and soybeans have higher than average erosion rates. Eroded soil pollutes air, fills up reservoirs, and shortens the time dams can store water and generate electricity. Yet the energy of the hydropower lost to siltation, energy to remediate flood damage, energy to dredge dams, agricultural drainage ditches, harbors, and navigation channels, aren’t considered in EROEI calculations.

The majority of the best soil in the nation is rented and has the highest erosion rates. More than half the best farmland in the United States is rented: 65% in Iowa, 74% in Minnesota, 84% in Illinois, and 86% in Indiana. Owners seeking short-term profits have far less incentive than farmers who work their land to preserve soil and water. As you can see in the map below [check with us later or use link below], the dark areas, which represent the highest erosion rates, are the same areas with the highest percentage of rented farmland.

http://www.ers.usda.gov/Briefing/ConservationAndEnvironment/Gallery/sediment.htm

Water Pollution

Soil erosion is a serious source of water pollution, since it causes runoff of sediments, nutrients, salts, eutrophication, and chemicals that have had no chance to decompose into streams. This increases water treatment costs, increases health costs, kills fish with insecticides that work their way up the food chain (Troeh 2005).

Ethanol plants pollute water. They generate 13 liters of wastewater for every liter of ethanol produced (Pimentel March 2005)

Water depletion

Biofuel factories use a huge amount of water – four gallons for every gallon of ethanol produced. Despite 30 inches of rain per year in Iowa, there may not be enough water for corn ethanol factories as well as people and industry. Drought years will make matters worse (Cruse 2006).

Fifty percent of Americans rely on groundwater (Glennon 2002), and in many states, this groundwater is being depleted by agriculture faster than it is being recharged. This is already threatening current food supplies (Giampetro 1997). In some western irrigated corn acreage, groundwater is being mined at a rate 25% faster than the natural recharge of its aquifer (Pimentel 2003).

Biodiversity

Every acre of forest and wetland converted to crop land decreases soil biota, insect, bird, reptile, and mammal biodiversity.

Part 4. Biodiesel: Can we eat enough French Fries?

The idea we could run our economy on discarded fried food grease is very amusing. For starters, you’d need to feed 7 million heavy diesel trucks getting less than 8 mpg. Seems like we’re all going to need to eat a lot more French Fries, but if anyone can pull it off, it would be Americans. Spin it as a patriotic duty and you’d see people out the door before the TV ad finished, the most popular government edict ever.

Scale. Where’s the Soy? Biodiesel is not ready for prime time. Although John Deere is working on fuel additives and technologies to burn more than 5% accredited biodiesel (made to ASTM D6751 specifications – vegetable oil does not qualify), that is a long way off. 52 billion gallons of diesel fuel are consumed a year in the United States, but only 75 million gallons of biodiesel were produced – two-tenths of one percent of what’s needed. To get the country to the point where gasoline was mixed with 5 percent biodiesel would require 64 percent of the soybean crop and 71,875 square miles of land (Borgman 2007), an area the size of the state of Washington. Soybeans cause even more erosion than corn.

Biodiesel shortens engine life. Currently, biodiesel concentrations higher than 5 percent can cause “water in the fuel due to storage problems, foreign material plugging filters…, fuel system seal and gasket failure, fuel gelling in cold weather, crankcase dilution, injection pump failure due to water ingestion, power loss, and, in some instances, can be detrimental to long engine life” (Borgman 2007). Biodiesel also has a short shelf life and it’s hard to store – it easily absorbs moisture (water is a bane to combustion engines), oxidizes, and gets contaminated with microbes. It increases engine NOx emissions (ozone) and has thermal degradation at high temperatures (John Deere 2006).

On the cusp of energy descent, we can’t even run the most vital aspect of our economy, agricultural machines, on “renewable” fuels. John Deere tractors can run on no more than 5% accredited biodiesel (Borgman 2007). Perhaps this is unintentionally wise – biofuels have yet to be proven viable, and mechanization may not be a great strategy in a world of declining energy.

Part 5. If we can’t drink and drive, then burn baby burn. Energy Crop Combustion

Wood is a crop, subject to the same issues as corn, and takes a lot longer to grow. Burning wood in your stove at home delivers far more energy than the logs would if converted to biofuels (Pimentel 2005). Wood was scarce in America when there were just 75 million people. Electricity from biomass combustion is not economic or sustainable.

Combustion pollution is expensive to control. Some biomass has absorbed heavy metals and other pollutants from sources like coal power plants, industry, and treated wood. Combustion can release chlorinated dioxins, benzofurans, polycyclic aromatic hydrocarbons, cadmium, mercury, arsenic, lead, nickel, and zinc.

Combustion contributes to global warming by adding nitrogen oxides and the carbon stored in plants back into the atmosphere, as well as removes agriculturally essential nitrogen and phosphate (Reijnders 2006)

EROEI in doubt. Combustion plants need to produce, transport, prepare, dry, burn, and control toxic emissions. Collection is energy intensive, requiring some combination of bunchers, skidders, whole-tree choppers, or tub grinders, and then hauling it to the biomass plant. There, the feedstock is chopped into similar sizes and placed on a conveyor belt to be fed to the plant. If biomass is co-fired with coal, it needs to be reduced in size, and the resulting fly ash may not be marketable to the concrete industry (Bain 2003). Any alkali or chlorine released in combustion gets deposited on the equipment, reducing overall plant efficiencies, as well as accelerating corrosion and erosion of plant components, requiring high replacement and maintenance energy.

Processing materials with different physical properties is energy intensive, requiring sorting, handling, drying, and chopping. It’s hard to optimize the pyrolysis, gasification, and combustion processes if different combustible fuels are used. Urban waste requires a lot of sorting, since it often has material that must be removed, such as rocks, concrete and metal. The material that can be burned must also be sorted, since it varies from yard trimmings with high moisture content to chemically treated wood.

Biomass combustion competes with other industries that want this material for construction, mulch, compost, paper, and other profitable ventures, often driving the price of wood higher than a wood-burning biomass plant can afford. Much of the forest wood that could be burned is inaccessible due to a lack of roads.

Efficiency is lowered if material with a high water content is burned, like fresh wood. Different physical and chemical characteristics in fuel can lead to control problems (Badger 2002). When wet fuel is burned, so much energy goes into vaporizing the water that very little energy emerges as heat, and drying takes time and energy.

Material is limited and expensive. California couldn’t use crop residues due to low bulk density. In 2000, the viability of California biomass enterprise was in serious doubt because the energy to produce biomass was so high due to the small facilities and high cost of collecting and transporting material to the plants (Bain 2003).

Part 6. The problems with Cellulosic Ethanol could drive you to drink.

Many plants want animals to eat their seed and fruit to disperse them. Some seeds only germinate after going through an animal gut and coming out in ready-made fertilizer. Seeds and fruits are easy to digest compared to the rest of the plant, that’s why all of the commercial ethanol and biodiesel are made from the yummy parts of plants, the grain, rather than the stalks, leaves, and roots.

But plants don’t want to be entirely devoured. They’ve spent hundreds of millions of years perfecting structures that can’t easily be eaten. Be thankful plants figured this out, or everything would be mown down to bedrock.

If we ever did figure out how to break down cellulose in our back yard stills, it wouldn’t be long before the 6.5 billion people on the planet destroyed the grasslands and forests of the world to power generators and motorbikes (Huber 2006)

Don Augenstein and John Benemann, who’ve been researching biofuels for over 30 years, are skeptical as well. According to them, “…severe barriers remain to ethanol from lignocellulose. The barriers look as daunting as they did 30 years ago”.

Benemann says the EROEI can be easily determined to be about five times as much energy required to make cellulosic ethanol than the energy contained in the ethanol.

The success of cellulosic ethanol depends on finding or engineering organisms that can tolerate extremely high concentrations of ethanol. Augenstein argues that this creature would already exist if it were possible. Organisms have had a billion years of optimization through evolution to develop a tolerance to high ethanol levels (Benemann 2006). Someone making beer, wine, or moonshine would have already discovered this creature if it could exist.

The range of chemical and physical properties in biomass, even just corn stover (Ruth 2003, Sluiter 2000), is a challenge. It’s hard to make cellulosic ethanol plants optimally efficient, because processes can’t be tuned to such wide feedstock variation.

Where will the Billion Tons of Biomass for Cellulosic Fuels Come From?

The government believes there is a billion tons of biomass “waste” to make cellulosic biofuels, chemicals, and generate electricity with.

The United States lost 52 million acres of cropland between 1982 and 2002 (NCRS 2004). At that rate, all of the cropland will be gone in 140 years.

There isn’t enough biomass to replace 30% of our petroleum use. The potential biomass energy is miniscule compared to the fossil fuel energy we consume every year, about 105 exa joules (EJ) in the USA. If you burned every living plant and its roots, you’d have 94 EJ of energy and we could all pretend we lived on Mars. Most of this 94 EJ of biomass is already being used for food and feed crops, and wood for paper and homes. Sparse vegetation and the 30 EJ in root systems are economically unavailable – leaving only a small amount of biomass unspoken for (Patzek June 2006).

Over 25% of the “waste” biomass is expected to come from 280 million tons of corn stover. Stover is what’s left after the corn grain is harvested. Another 120 million tons will come from soy and cereal straw (DOE Feedstock Roadmap, DOE Biomass Plan).

There isn’t enough no-till corn stover to harvest. The success of biofuels depends on corn residues. About 80% of farmers disk corn stover into the land after harvest. That renders it useless — the crop residue is buried in mud and decomposing rapidly.

Only the 20 percent of farmers who farm no-till will have stover to sell. The DOE Billion Ton vision assumes all farmers are no-till, 75% of residues will be harvested, and fantasizes corn and wheat yields 50% higher than now are reached (DOE Billion Ton Vision 2005).

Many tons will never be available because farmers won’t sell any, or much of their residue (certainly not 75%).

Many more tons will be lost due to drought, rain, or loss in storage.

Sustainable harvesting of plants is only 1/200th at best. Plants can only fix a tiny part of solar energy into plant matter every year — about one-tenth to one-half of one percent new growth in temperate climates.

To prevent erosion, you could only harvest 51 million tons of corn and wheat residues, not 400 million tons (Nelson, 2002). Other factors, like soil structure, soil compression, water depletion, and environmental damage weren’t considered. Fifty one million tons of residue could make about 3.8 billion gallons of ethanol, less than 1% of our energy needs.

Using corn stover is a problem, because corn, soy, and other row crops cause 50 times more soil erosion than sod crops (Sullivan 2004) or more (Al-Kaisi 2000), and corn also uses more water, insecticides and fertilizers than most crops (Pimentel 2003).

The amount of soy and cereal straw (wheat, oats, etc) is insignificant. It would be best to use cereal grain straw, because grains use far less water and cause far less erosion than row crops like corn and soybeans. But that isn’t going to happen, because the green revolution fed billions more people by shortening grain height so that plant energy went into the edible seed, leaving little straw for biofuels. Often 90% of soybean and cereal straw is grown no-till, but the amount of cereal straw is insignificant and the soybean residues must remain on the field to prevent erosion

Energy Crops

Poor, erodible land. There aren’t enough acres of land to grow significant amounts of energy crops. Potential energy crop land is usually poor quality or highly erodible land that shouldn’t be harvested. Farmers are often paid not to farm this unproductive land. Many acres in switchgrass are being used for wildlife and recreation.

Few suitable bio-factory sites. Biorefineries can’t be built just anywhere – very few sites could be found to build switchgrass plants in all of South Dakota (Wu 1998). Much of the state didn’t have enough water or adequate drainage to build an ethanol factory. The sites had to be on main roads, near railroad and natural gas lines, out of floodplains, on parcels of at least 40 acres to provide storage for the residues, have electric power, and enough biomass nearby to supply the plant year round.

No energy crop farmers or investors. Farmers won’t grow switchgrass until there’s a switchgrass plant. Machines to harvest and transport switchgrass efficiently don’t exist yet (Barrionuevo 2006). The capital to build switchgrass plants won’t materialize until there are switchgrass farmers. Since “ethanol production using switchgrass required 50% more fossil energy than the ethanol fuel produced” (Pimentel 2005), investors for these plants will be hard to find.

Energy crops are subject to Liebig’s law of the minimum too. Switchgrass may grow on marginal land, but it hasn’t escaped the need for minerals and water. Studies have shown the more rainfall, the more switchgrass you get, and if you remove switchgrass, you’re going to need to fertilize the land to replace the lost biomass, or you’ll get continually lower yields of switchgrass every time you harvest the crop (Vogel 2002). Sugar cane has been touted as an “all you need is sunshine” plant. But according to the FAO, the nitrogen, phosphate, and potassium requirements of sugar cane are roughly similar to maize (FAO 2004).

Bioinvasive Potential. These fast-growing disease-resistant plants are potentially bioinvasive, another kudzu. Bioinvasion costs our country billions of dollars a year (Bright, 1998). Johnson grass was introduced as a forage grass and it’s now an invasive weed in many states. Another fast-growing grass, Miscanthus, is now being proposed as a biofuel. It’s been described as “Johnson grass on steroids” (Raghu 2006).

Sugar cane: too little to import. Brazil uses oil for 90% of their energy, and 17 times less oil (Jordan 2006). Brazilian ethanol production in 2003 was 3.3 billion gallons, about the same as the USA in 2004, or 1% of our transportation energy. Brazil uses 85% of their cane ethanol, leaving only 15% for export.

Sugar Cane: can’t grow it here. Although we grow some sugar cane despite tremendous environmental damage (WWF) in Florida thanks to the sugar lobby, we’re too far north to grow a significant amount of sugar cane or other fast growing C4 plants.

Wood ethanol is an energy sink. Ethanol production using wood biomass required 57% more fossil energy than the ethanol fuel produced (Pimentel 2005).

Wood is a nonrenewable resource. Old-growth forests had very dense wood, with a high energy content, but wood from fast-growing plantations is so low-density and low calorie it’s not even good to burn in a fireplace. These plantations require energy to plant, fertilize, weed, thin, cut, and deliver. The trees are finally available for use after 20 to 90 years – too long for them to be considered a renewable fuel (Odum 1996). Nor do secondary forests always come back with the vigor of the preceding forest due to soil erosion, soil nutrition depletion, and mycorrhizae destruction (Luoma 1999).

There’s not enough wood to fuel a civilization of 300 million people. Over half of North America was deforested by 1900, at a time when there were only 75 million people (Williams 2003). Most of this was from home use. In the 18th century the average Northeastern family used 10 to 20 cords per year. At least one acre of woods is required to sustainably harvest one cord of wood (Whitney 1994).

Energy crop limits. Energy crops may not be sustainable due to water, fertilizer, and harvesting impacts on the soil (DOE Biomass Roadmap 2005). Like all other monoculture crops, ultimately yields of energy crops will be reduced due to “pest problems, diseases, and soil degradation” (Giampetro, 1997).

Energy crop monoculture. The “physical and chemical characteristics of feedstocks vary by source, by year, and by season, increasing processing costs” (DOE Feedstock Roadmap). That will encourage the development of genetically engineered biomass to minimize variation. Harvesting economies of scale will mean these crops will be grown in monoculture, just as food crops are. That’s the wrong direction – to farm with less energy there’ll need to be a return to rotation of diverse crops, and composted residues for soil nutrition, pest, and disease resistance.

A way around this would be to spend more on researching how cellulose digesting microbes tackle different herbaceous and woody biomass. The ideal energy crop would be a perennial, tall-grass prairie / herbivore ecosystem (Tilman 2006).

Farmers aren’t Stupid: They won’t sell their residues

Farmers are some of the smartest people on earth or they’d soon go out of business. They have to know everything from soil science to commodity futures.

Crop production is reduced when residues are removed from the soil. Why would farmers want to sell their residues?

Erosion, water, compression, nutrition. Harvesting of stover on the scale needed to fuel a cellulosic industry won’t happen because farmers aren’t stupid, especially the ones who work their own land. Although there is a wide range of opinion about the amount of residue that can be harvested safely without causing erosion, loss of soil nutrition, and soil structure, many farmers will want to be on the safe side, and stick with the studies showing that 20% (Nelson, 2002) to 30% (McAloon et al., 2000; Sheehan, 2003) at most can be harvested, not the 75% agribusiness claims is possible. Farmers also care about water quality (Lal 1998, Mann et al, 2002). And farmers will decide that permanent soil compression is not worth any price (Wilhelm 2004). As prices of fertilizer inexorably rise due to natural gas depletion, it will be cheaper to return residues to the soil than to buy fertilizer.

Residues are a headache. The further the farmer is from the biorefinery or railroad, the slimmer the profit, and the less likely a farmer will want the extra headache and cost of hiring and scheduling many different harvesting, collection, baling, and transportation contractors for corn stover.

Residues are used by other industries. Farm managers working for distant owners are more likely to sell crop residues since they’re paid to generate profits, not preserve land. But even they will sell to the highest bidder, which might be the livestock or dairy industries, furfural factories, hydromulching companies, biocomposite manufacturers, pulp mills, or city dwellers faced with skyrocketing utility bills, since the high heating value of residue has twice the energy of the converted ethanol.

Investors aren’t stupid either. If farmers can’t supply enough crop residues to fuel the large biorefinery in their region, who will put up the capital to build one?

Can the biomass be harvested, baled, stored, and transported economically?

Harvesting. Sixteen ton tractors harvest corn and spit out stover. Many of these harvesters are contracted and will continue to collect corn in the limited harvest time, not stover. If tractors are still available, the land isn’t wet, snow doesn’t fall, and the stover is dry, three additional tractor runs will mow, rake, and bale the stover (Wilhelm 2004). This will triple the compaction damage to the soil (Troeh 2005), create more erosion-prone tire tracks, increase CO2 emissions, add to labor costs, and put unwanted foreign matter into the bale (soil, rocks, baling wire, etc).

So biomass roadmaps call for a new type of tractor or attachment to harvest both corn and stover in one pass. But then the tractor would need to be much larger and heavier, which could cause decades-long or even permanent soil compaction. Farmers worry that mixing corn and stover might harm the quality of the grain. And on the cusp of energy descent, is it a good idea to build an even larger and more complex machine?

If the stover is harvested, the soil is now vulnerable to erosion if it rains, because there’s no vegetation to protect the soil from the impact of falling raindrops. Rain also compacts the surface of the soil so that less water can enter, forcing more to run off, increasing erosion. Water landing on dense vegetation soaks into the soil, increasing plant growth and recharging underground aquifers. The more stover left on the land, the better.

Baling. The current technology to harvest residues is to put them into bales of hay. Hay is a dangerous commodity — it can spontaneously combust, and once on fire, can’t be extinguished, leading to fire loss and increased fire insurance costs. Somehow the bales have to be kept from combusting during the several months it takes to dry them from 50 to 15 percent moisture. A large, well drained, covered area is needed to vent fumes and dissipate heat. If the bales get wet they will compost (Atchison 2004).

Baling was developed for hay and has been adapted to corn stover with limited success. Biorefineries need at least half a million tons of biomass on hand to smooth supply bumps, much greater than any bale system has been designed for. Pelletization is not an option, it’s too expensive. Other options need to be found. (DOE Feedstock Roadmap)

To get around the problems of exploding hay bales, wet stover could be collected. The moisture content needs to be around 60 percent, which means a lot of water will be transported, adding significantly to the delivery cost.

Storage. Stover needs to be stored with a moisture content of 15% or less, but it’s typically 35-50%, and rain or snow during harvest will raise these levels even higher (DOE Feedstock Roadmap). If it’s harvested wet anyhow, there’ll be high or complete losses of biomass in storage (Atchison 2004).

Residues could be stored wet, as they are in ensilage, but a great deal of R&D are needed and to see if there are disease, pest, emission, runoff, groundwater contamination, dust, mold, or odor control problems. The amount of water required is unknown. The transit time must be short, or aerobic microbial activity will damage it. At the storage site, the wet biomass must be immediately washed, shredded, and transported to a drainage pad under a roof for storage, instead of baled when drier and left at the farm. The wet residues are heavy, making transportation costlier than for dry residues, perhaps uneconomical. It can freeze in the winter making it hard to handle. If the moisture is too low, air gets in, making aerobic fermentation possible, resulting in molds and spoilage.

Transportation. Although a 6,000 dry ton per day biorefinery would have 33% lower costs than a 2,000 ton factory, the price of gas and diesel limits the distance the biofuel refinery can be from farms, since the bales are large in volume but low in density, which limits how many bales can be loaded onto a truck and transported economically.

So the “economy of scale” achieved by a very large refinery has to be reduced to a 2,000 dry ton per day biorefinery. Even this smaller refinery would require 200 trucks per hour delivering biomass during harvest season (7 x 24), or 100 trucks per day if satellite sites for storage are used. This plant would need 90% of the no-till crop residues from the surrounding 7,000 square miles with half the farmers participating. Yet less than 20% of farmers practice no-till corn and not all of the farmland is planted in corn. When this biomass is delivered to the biorefinery, it will take up at least 100 acres of land stacked 25 feet high.

The average stover haul to the biorefinery would be 43 miles one way if these rosy assumptions all came true (Perlack 2002). If less than 30% of the stover is available, the average one-way trip becomes 100 miles and the biorefinery is economically impossible.

There is also a shortage of truck drivers, the rail system can’t handle any new capacity, and trains are designed to operate between hubs, not intermodally (truck to train to truck). The existing transportation system has not changed much in 30 years, yet this congested, inadequate infrastructure somehow has to be used to transport huge amounts of ethanol, biomass, and byproducts (Haney 2006).

Cellulosic Biorefineries (see Appendix for more barriers)

There are over 60 barriers to be overcome in making cellulosic ethanol in Section III of the DOE “Roadmap for Agriculture Biomass Feedstock Supply in the United States” (DOE Feedstock Roadmap 2003). For example:

“Enzyme Biochemistry. Enzymes that exhibit high thermostability and substantial resistance to sugar end-product inhibition will be essential to fully realize enzyme-based sugar platform technology. The ability to develop such enzymes and consequently very low cost enzymatic hydrolysis technology requires increasing our understanding of the fundamental mechanisms underlying the biochemistry of enzymatic cellulose hydrolysis, including the impact of biomass structure on enzymatic cellulose decrystallization. Additional efforts aimed at understanding the role of cellulases and their interaction not only with cellulose but also the process environment is needed to affect further reductions in cellulase cost through improved production”.

No wonder many of the issues with cellulosic ethanol aren’t discussed – there’s no way to express the problems in a sound bite.

It may not be possible to reduce the complex cellulose digesting strategies of bacteria and fungi into microorganisms or enzymes that can convert cellulose into ethanol in giant steel vats, especially given the huge physical and chemical variations in feedstock. The field of metagenomics is trying to create a chimera from snips of genetic material of cellulose-digesting bacteria and fungi. That would be the ultimate Swiss Army-knife microbe, able to convert cellulose to sugar and then sugar to ethanol.

There’s also research to replicate termite gut cellulose breakdown. Termites depend on fascinating creatures called protists in their guts to digest wood. The protists in turn outsource the work to multiple kinds of bacteria living inside of them. This is done with energy (ATP) and architecture (membranes) in a system that evolved over millions of years. If the termite could fire the protists and work directly with the bacteria, that probably would have happened 50 million years ago. This process involves many kinds of bacteria, waste products, and other complexities that may not be reducible to an enzyme or a bacteria.

Finally, ethanol must be delivered. A motivation to develop cellulosic ethanol is the high delivery cost of corn grain ethanol from the Midwest to the coasts, since ethanol can’t be delivered cheaply through pipelines, but must be transported by truck, rail, or barge (Yacobucci 2003).

The whole cellulosic ethanol enterprise falls apart if the energy returned is less than the energy invested or even one of the major stumbling blocks can’t be overcome. If there isn’t enough biomass, if the residues can’t be stored without exploding or composting, if the oil to transport low-density residues to biorefineries or deliver the final product is too great, if no cheap enzymes or microbes are found to break down lignocellulose in wildly varying feedstocks, if the energy to clean up toxic byproducts is too expensive, or if organisms capable of tolerating high ethanol concentrations aren’t found, if the barriers in Appendix A can’t be overcome, then cellulosic fuels are not going to happen.

If the obstacles can be overcome, but we lose topsoil, deplete aquifers, poison the land, air, and water — what kind of Faustian bargain is that?

Scientists have been trying to solve these issues for over thirty years now.

Nevertheless, this is worthy of research money, but not public funds for commercial refineries until the issues above have been solved. This is the best hope we have for replacing the half million products made from and with fossil fuels, and for liquid transportation fuels when population falls to pre-coal levels.

Part 7. Where do we go from here?

Subsidies and Politics

How come there are over 116 ethanol plants with 79 under construction and 200 more planned? The answer: subsidies and tax breaks.

Federal and state ethanol subsidies add up to 79 cents per liter (McCain 2003), with most of that going to agribusiness, not farmers. There is also a tax break of 5.3 cents per gallon for ethanol (Wall Street Journal 2002). An additional 51 cents per gallon goes mainly to the oil industry to get them to blend ethanol with gasoline.

In addition to the $8.4 billion per year subsidies for corn and ethanol production, the consumer pays an additional amount for any product with corn in it (Pollan 20005), beef, milk, and eggs, because corn diverted to ethanol raises the price of corn for the livestock industry.

Worst of all, the subsidies may never end, because Iowa plays a leading role in who’s selected to be the next president. John McCain has softened his stand on ethanol (Birger 2006). All four senators in California and New York have pointed out that “ethanol subsidies are nothing but a way to funnel money to agribusiness and corn states at the expense of the rest of the country” (Washington Post 2002).

“Once we have a corn-based technology up and running the political system will protect it,” said Lawrence J. Goldstein, a board member at the Energy Policy Research Foundation. “We cannot afford to have 15 billion gallons of corn-based ethanol in 2015, and that’s exactly where we are headed” (Barrionuevo 2007).

Conclusion

Soil is the bedrock of civilization (Perlin 1991, Ponting 1993). Biofuels are not sustainable or renewable. Why would we destroy our topsoil, increase global warming, deplete and pollute groundwater, destroy fisheries, and use more energy than what’s gained to make ethanol? Why would we do this to our children and grandchildren?

Perhaps it’s a combination of pork barrel politics, an uninformed public, short-sighted greedy agribusiness corporations, jobs for the Midwest, politicians getting too large a percent of their campaign money from agribusiness (Lavelle 2007), elected leaders without science degrees, and desperation to provide liquid transportation fuels (Bucknell 1981, Hirsch 2005).

But this madness puts our national security at risk. Destruction of topsoil and collateral damage to water, fisheries, and food production will result in less food to eat or sell for petroleum and natural gas imports. Diversion of precious dwindling energy and money to impossible solutions is a threat to our nations’ future.

Fix the unsustainable and destructive aspects of industrial agriculture. At least some good would come out of the ethanol fiasco if more attention were paid to how we grow our food. The effects of soil erosion on crop production have been hidden by mechanization and intensive use of fossil fuel fertilizers and chemicals on crops bred to tolerate them. As energy declines, crop yields will decline as well.

Jobs. Since part of what’s driving the ethanol insanity is job creation, divert the subsidies and pork barrel money to erosion control and sustainable agriculture. Maybe Iowa will emerge from its makeover looking like Provence, France, and volunteers won’t be needed to hand out free coffee at rest areas along I-80.

Continue to fund cellulosic ethanol research, focusing on how to make 500,000 fossil-fuel-based products (i.e. medicine, chemicals, plastics, etc) and fuel for when population declines to pre-fossil fuel carrying capacity. The feedstock should be from a perennial, tall-grass prairie herbivore ecosystem, not food crops. But don’t waste taxpayer money to build demonstration or commercial plants until most of the research and sustainability barriers have been solved.

California should not adopt the E10 ethanol blend for global warming bill AB 32. Biofuels are at best neutral and at worst contribute to global warming. A better early action item would be to favor low-emission vehicle sales and require all new cars to have energy efficient tires.

Take away the E85 loophole that allows Detroit automakers to ignore CAFE standards and get away with selling even more gas guzzling vehicles (Consumer Reports 2006). Raise the CAFE standards higher immediately.

There are better, easier ways to stretch out petroleum than adding ethanol to it. Just keeping tires inflated properly would save more energy than all the ethanol produced today. Reducing the maximum speed limit to 55, consumer driving tips, truck stop electrification, and many other measures can save far more fuel in a shorter time than biofuels ever will, far less destructively. Better yet, Americans can bike or walk, which will save energy used in the health care system.

Let’s stop the subsidies and see if ethanol can fly.

Reform our non-sustainable agricultural system

 Give integrated pest management and organic agriculture research more funding
 The National Resources Conservation Service (NCRS) and other conservation agencies have done a superb job of lowering the erosion rate since the dustbowl of the 1930’s. Give these agencies a larger budget to further the effort.
 To promote land stewardship, change taxes and zoning laws to favor small family farms. This will make possible the “social, economic, and environmental diversity necessary for agricultural and ecosystem stability” (Opie 2000).
 Make the land grant universities follow the directive of the Hatch Act of 1887 to improve the lives of family farmers. Stop funding agricultural mechanization and petrochemical research and start funding how to fight pests and disease with diverse crops, crop rotations, and so on (Hightower 1978).
 Don’t allow construction of homes and businesses on prime farm land.  Integrate livestock into the crop rotation.
 Teach family farmers and suburban homeowners how to maximize food production in limited space with Rodale and Biointensive techniques.
 Since less than 1 percent of our elected leaders and their staff have scientific backgrounds, educate them in systems ecology, population ecology, soil, and climate science. So many of the important issues that face us need scientific understanding and judgment.
 Divert funding from new airports, roads, and other future senseless infrastructure towards research in solar, wind, and cellulosic products. We’re at the peak of scientific knowledge and our economic system hasn’t been knocked flat yet by energy shortages – if we don’t do the research now, it may never happen.

It’s not unreasonable to expect farmers to conserve the soil, since the fate of civilization lies in their hands. But we need to pay farmers for far more than the cost of growing food so they can afford to conserve the land. In an oil-less future, healthy topsoil will be our most important resource.

Responsible politicians need to tell Americans why their love affair with the car can’t continue. Leaders need to make the public understand that there are limits to growth, and an increasing population leads to the “Tragedy of the Commons”. Even if it means they won’t be re-elected. Arguing this amidst the church of development that prevails this is like walking into a Bible-belt church and telling the congregation God doesn’t exist, but it must be done.

We are betting the farm on making cellulosic fuels work at a time when our energy and financial resources are diminishing. No matter how desperately we want to believe that human ingenuity will invent liquid or combustible fuels despite the laws of thermodynamics and how ecological systems actually work, the possibility of failure needs to be contemplated.

Living in the moment might be enlightenment for individuals, but for a nation, it’s disastrous. Is there a Plan B if biofuels don’t work? Coal is not an option. CO2 levels over 1,000 ppm could lead to the extinction of 95% of life on the planet (Lynas 2007, Ward 2006, Benton 2003).

Here we are, on the cusp of energy descent, with mechanized petrochemical farms. We import more farm products now than we sell abroad (Rohter 2004). Suburban sprawl destroys millions of acres of prime farm land as population grows every year. We’ve gone from 7 million family farms to 2 million much larger farms and destroyed a deeply satisfying rural way of life.

There need to be plans for de-mechanization of the farm economy if liquid fuels aren’t found. There are less than four million horses, donkeys, and mules in America today. According to Bucknell, if the farm economy were de-mechanized, you’d need at least 31 million farm workers and 61 million horses. (Bucknell 1981)

The population of the United States has grown over 25 percent since Bucknell published Energy and the National Defense. To de-mechanize now, we’d need 39 million farm workers and 76 million horses. The horsepower represented by just farm tractors alone is equal to 400 million horses. It’s time to start increasing horse and oxen numbers, which will leave even less biomass for biorefineries.

We need to transition from petroleum power to muscle power gracefully if we want to preserve democracy. Paul Roberts wonders whether the coming change will be “peaceful and orderly or chaotic and violent because we waited too long to begin planning for it” (Roberts 2004).

What is the carrying capacity of the nation? Is it 100 million (Pimentel 1991) or 250 million (Smil 2000)? Whatever carrying capacity is decided upon, pass legislation to drastically lower immigration and encourage one child families until America reaches this number. Or we can let resource wars, hunger, disease, extreme weather, rising oceans, and social chaos legislate the outcome.

Do you want to eat or drive? Even without growing food for biofuels, crop production per capita is going to go down as population keeps increasing, fossil fuel energy decreases, topsoil loss continues, and aquifers deplete, especially the Ogallala (Opie 2000). Where will the money come from to buy imported oil and natural gas if we don’t have food to export?

There is no such thing as “waste” biomass. As we go down the energy ladder, plants will increasingly be needed to stabilize climate, provide food, medicine, shelter, furniture, heat, light, cooking fuel,

Nat’l Biodiesel Board’s Life Cycle Paper

In May of 1998, the US Department of Energy (DOE) and US Department of Agriculture (USDA) published the results of the Biodiesel Lifecycle Inventory Study. It compared findings for a comprehensive “cradle to grave” inventory of materials used; energy resources consumed; and air, water and solid waste emissions generated by petroleum diesel fuels and biodiesel in order to compare the total “lifecycle” costs and benefits of each of the fuels. This 3.5-year study followed US Environmental Protection Agency (EPA) and private industry-approved protocols for conducting this type of research. Below is a summary of the study. The full text of this 312 page study may be found at:

http://www.biodiesel.org/resources/reportsdatabase/reports/gen/19980501_gen-339.pdf.
In evaluating the results of the Lifecycle Inventory Study, several caveats need to be noted. First, the study was not designed to present conclusions on the appropriate policies to promote the use of biodiesel. Instead, the study was designed to provide policy makers with comparative information that they could use to formulate appropriate policies regarding biodiesel. Second, the study does not provide any economic comparisons or valuations based on current market prices for the two fuels. Third, the study generally assumes that the comparative lifecycle benefits or costs of biodiesel and diesel fuel are proportional when biodiesel and diesel fuel are blended into one fuel, as in the popular 20% biodiesel/80% diesel blend known as B20.

With these caveats in mind, the major findings of the study are:

  • The total energy efficiency ratio (ie. total fuel energy/total energy used in production, manufacture, transportation, and distribution) for diesel fuel and biodiesel are 83.28% for diesel vs 80.55% for biodiesel. The report notes: “Biodiesel and petroleum diesel have very similar energy efficiencies.”
  • The total fossil energy efficiency ratio (ie. total fuel energy/total fossil energy used in production, manufacture, transportation, and distribution) for diesel fuel and biodiesel shows that biodiesel is four times as efficient as diesel fuel in utilizing fossil energy – 3.215 for biodiesel vs 0.8337% for diesel. The study notes: “In terms of effective use of fossil energy resources, biodiesel yields around 3.2 units of fuel product for every unit of fossil energy consumed in the lifecycle. By contrast, petroleum diesel’s life cycle yields only 0.83 units of fuel product per unit of fossil energy consumed. Such measures confirm the ‘renewable’ nature of biodiesel.” The report also notes: “On the basis of fossil energy inputs, biodiesel enhances the effective utilization of this finite energy source.”
  • In urban bus engines, biodiesel and B20 exhibit similar fuel economy to diesel fuel, based on a comparison of the volumetric energy density of the two fuels. The study explains, “Generally fuel consumption is proportional to the volumetric energy density of the fuel based on lower or net heating value. ..{D}iesel contains about 131,295 Btu/gal while biodiesel contains approximately 117,093 Btu/gal. The ratio is 0.892. If biodiesel has no impact on engine efficiency, volumetric fuel economy would be approximately 1 0% lower for biodiesel compared to petroleum diesel. However, fuel efficiency and fuel economy of biodiesel tend to be only 2%-3% less than #2 diesel.”
  • The overall lifecycle emissions of carbon dioxide (a major greenhouse gas) from biodiesel are 78% lower than the overall carbon dioxide emissions from petroleum diesel. “The reduction is a direct result of carbon recycling in soybean plants,” notes the study.

*The overall lifecycle emissions of carbon monoxide (a poisonous gas and a contributing factor in the localized formation of smog and ozone) from biodiesel are 35% lower than overall carbon monoxide emissions from diesel. Biodiesel also reduces bus tailpipe emissions of carbon monoxide by 46%. The study says “Biodiesel could, therefore, be an effective tool for mitigating CO in EPA’s designated CO non-attainment areas.”

*The overall lifecycle emissions of particulate matter (recognized as a contributing factor in respiratory disease) from biodiesel are 32% lower than overall particulate matter emissions from diesel. Bus tailpipe emissions of PM1 0 are 68% lower for biodiesel compared to petroleum diesel. The study notes, ‘PM10 emitted from mobile sources is a major EPA target because of its role in respiratory disease. Urban areas represent the greatest risk in terms of numbers of people exposed and level of PM 1 0 present. Use of biodiesel in urban buses is potentially a viable option for controlling both life cycle emissions of total particulate matter and tailpipe emission of PM1 O.”

The study also finds that biodiesel reduces the total amount of particulate matter soot in bus tailpipe exhaust by 83.6%. Soot is the heavy black smoke portion of the exhaust that is essentially 100% carbon that forms as a result of pyrolysis reactions during fuel combustion. The study notes there is on-going research to discover the relationship between exposure to diesel soot and cancerous growths in mice. Beyond the potential public health benefit from substantially reduced soot emissions, the study also notes: [T]here is an aesthetic benefit associated with significantly less visible smoke observed from the tailpipe. For urban bus operators, this translates into improved public relations.”

*The overall lifecycle emissions of sulfur oxides (major components of acid rain) from biodiesel are 8% lower than overall sulfur oxides emissions from diesel. Biodiesel completely eliminates emissions of sulfur oxides from bus tailpipe emissions. The study notes, “Biodiesel can eliminate sulfur oxides emissions because it is sulfur-free.”

* The overall lifecycle emissions of methane (one of the most potent greenhouse gases) from biodiesel are almost 3.0% lower than overall methane emissions from diesel. The study notes, “Though the reductions achieved with biodiesel are small, they could be significant when estimated on the basis of its ‘CO2 equivalent’-warming potential.”

* The overall lifecycle emissions of nitrogen oxides (a contributing factor in the localized formation of smog and ozone) from biodiesel are 13% greater than overall nitrogen oxide emissions from diesel. An urban bus that runs on biodiesel has tailpipe emissions that are only 8.89% higher than a bus operated on petroleum diesel. The study also notes: “Smaller changes in NOx emissions for BIOO and B20 have been observed in current research programs on new model engines but it is still to early to predict whether all or just a few future engines will display this characteristic.” and “… (S)olutions are potentially achievable that meet tougher future (vehicle) standards for NOx without sacrificing the other benefits of this fuel.”

* The bus tailpipe emissions of hydrocarbons (a contributing factor in the localized formation of smog and ozone) are 37% lower for biodiesel than diesel fuel. However, the overall lifecycle emissions of hydrocarbons from biodiesel are 35% greater than overall hydrocarbon emissions from diesel. The study notes, ‘In understanding the implications of higher lifecycle emissions, it is important to remember that emissions of hydrocarbons, as with all of the air pollutants discussed, have localized effects. In other words it makes a difference where these emissions occur. The fact that biodiesel’s hydrocarbon emissions at the tailpipe are lower may mean that the biodiesel life cycle has beneficial effects on urban area pollution.”

The study also cautions about drawing hard conclusions related to the total life cycle emissions of hydrocarbons from sources other than the engine tailpipe: “We have less confidence in the hydrocarbon air emissions results from this study. …Our data set includes numbers reported as “unspecified hydrocarbons” and as “non-methane hydrocarbons'(NMHC). Given these kinds of ambiguities in the data, results on hydrocarbon emissions need to be viewed with caution.”

* The overall lifecycle production of wastewater from biodiesel is 79.0% lower than overall production of wastewater from diesel. The study notes, ‘Petroleum diesel generates roughly five times as much wastewater flow as biodiesel.’

The overall lifecycle production of hazardous solid wastes from biodiesel is 96% lower than overall production of hazardous solid wastes from diesel. However, the overall life cycle production of non-hazardous solid wastes from biodiesel is twice as great as the production of non-hazardous solid wastes from diesel. The study notes: “Given the more severe impact of hazardous versus non-hazardous waste disposal, this is a reasonable trade-off.”

Maui Group Salutes Environmental Heroes At Silver Anniversary Awards Ceremony

The Maui Sierra Club Executive Committee extends a hearty “mahalo” to all those volunteers, community members and local businesses who made our 25th Anniversary Silver Moon Gala a resounding success. See complete list below.


Maui Group Salutes Environmental Heroes
At Silver Anniversary Awards Ceremony

The Maui Group’s quarter century of accomplishments have been made possible through the dedicated efforts of numerous Group members and allies. During its November 3, 2006 Silver Anniversary Gala, the Group  presented special service awards to thank some of the many who have offered their time and talents to protect Maui’s environment.

Those honored were:

  •  Dana & Isaac Hall: Aloha ‘Aina Award. The for nearly two decades the Halls have contributed their legal expertise and expert research to defending Maui’s lands, waters and cultural sites.
  •  Lorna Joan Harrison: Malama ‘Aina Award. Lorna has quietly and tirelessly organized, led and participated in countless service outing projects over the past 20 years, protecting Maui’s native plants and ridding the island of alien pests.
  •  Dr. Rick Sands and Anthony Ranken, Esq.: Malama Kahakai Award. Rick and Anthony launched a successful, year-long SPAM (State Park at Makena) campaign to preserve Maui’s famed Big Beach while serving on the Maui Group Excomm. Both were founders of MG ally, Maui Tomorrow.
  •  Mary Evanson: Lifetime Achievement Award for her numerous conservation efforts that have proven so effective.

In addition, the five founding members of the Maui Group of Sierra Club (or a close family member in their stead) were honored:

  • 8/3/09
  •  Bud Aronson
  •  The late John Bose
  •  Dr. James Fleming
  •  Noted biologist, Cameron Kepler

Our thanks to AT&T Wireless of Maui, which has donated a cell phone to the Maui Group for use in assuring safety on our hikes and outings, and for facilitating the activity of volunteers working on public interest and educational issues. Maui Group heartily thanks AT&T Wireless for their support of our activities.

A special note of appreciation goes to  David Leese for many years of devoted service as vice-chairman, secretary, and newsletter editor (usually all at the same time). He is taking a well-deserved break.


Mahalo to All Who Made the
Silver Moon Gala Possible

SPECIAL
Anthony Ranken, Esq
Barry & Stella Rivers
Big Bugga Sportswear
Borders
David Darling
David Tracy-Metz
Daya Ceglia
Design Network, Makawao
Dolphin T’s /Dreams of Fields Gallery
Dr. Diane Shephard, DVM
Ed Lindsey
Gordeen Bailey
Groove 2 Music
Haiku Pharmacy
John Schofill
Kathy Marchetti
Liz Lanes-Brown
Maui Child
Maui Printing, Co.
Nagasako’s Fish Market
Peter Scheel
Richard Fields
Timpone Hawaii
Tropical Disk
Vickie Schultz
Dr. Andrew M. & Nikki JanssenDONORS
All Computer Services/Ken Stover
Aloha Bead Co., Paia
Sarah Klopping
Alysia McKee
Andrew Annenberg
Angie Young Hair Salon
Ann Fielding
Anna Hadley
Anthony’s Coffee Shop
Art by Lloyd
AT&T
Audrey Antone Blaack
Barbara Steinberg
Barry & Stella Rivers
Biasa Rose Boutique
Big Bugga, Paia
Bill Best Creations
Blue Hawaiian Helicopters
Brian Parker
Candace Horton
Capt Simone & Maureen
Carl Lyle Jenkins
Christa Morf
Christina Hemming
Christine Warner
Claudia Keane
Claudio Stancov
Claud’s Motor Tech, Kula
Clear Image
Deanna Rassmusson
Dennis Holzer
Dr. Andrew M. & Nikki Janssen
Dr. Leisure
Dr. Nathan Ehrlich, N.D
Dr. Whitley
Driesbach Data
Dunes at Maui Lani
EJLDF
Ellen Levinsky
Erin Graue
Ernie’s QuickLube, Kihei
Eva Daniels
Franklin Levinson
Gail Pickholz
George Allen
Goodies of Makawao
Haleakala Express
Hank Kline
Hawaiian Herbal
Helen Anne Schonwalter
Hermine Harman
Ho`ike
Howie of Maui
Huelo Point Flower Farm
Huelo Point Lookout
Island Essence
Island People, Paia
Isle Dezyn & Interiors
Jaggers, Paia
Janice McCormick/Great Cuts
Jason Schwarz, Pacific West Mortgage
Jor-El
Julia Renigado
Just for You and Me Kid
Kai Mayerfeld
Karen Jennings
Karen Stover
Karen Stover Maui Ocean Center
Katya Rice
Katya Rice
Kelli Meade
K-Mart
Koa B Handwovens
Kutira DeCosterd
Lance Tanino
Lee Altenburg
Lisa Owens
Lucienne de Naie
Lucretia Oddie
Mama’s Fish House
Mana Foods, Paia
Mana Foods, Paia
Mandala, Paia
Manuela Christenel
Margie Campbell
Maria Socorro Young
Martha Vockrodt Moran
Masako Wescott
Maui Girl, Paia
Maui Heavenscapes
Maui Myth & Magic Theater
Maui Wellness Center
Melissa Hamilton
Melissa Hamilton
Monica & Michael Sweet
Moonbow, Paia
Neola Caveny
Niyaso Carter
Northshore Chiropratic
Nuage Bleu
O’Connor Silhouettes
Old Plantation, Paia
Orchids of Olinda
Pacific Island Art
Paia Trading Company
Patagonia
Paula Brock
Pauline Sugarman
Peter Kafka
Peter Voorhees/A Cut Above
Piero Resta
Postal Plus, Makawao
Pukalani Chiropractic
Richard Dan
Richard Langford
Rick Newenger
Robbie Friedlander
Sandy Vitarelli
Sativa Hempwear
Shangri-La, Huelo
Sharon Owens
Sherri Reeve
Sony Corporation
Spyglass House
Stella River
Stephanie Landers
Tanesha Bryan
Terri Mister
Terry Tico
The Enchantress, Paia
Thomas & Joan Heartfield
Travel Hawaii
Tropical Orchid Farm
Val Sisneros
Vic’s Plumbing
W.S.B. Tully
Willi Wolf
William Lattner

ENTERTAINMENT
Musical Options Entertainment
Victoria Joyce
Joy Magarifuji
Espresso
Tim O’Hara,band leader
Greg Marsh, drums
Tim Hackbarth, bass
Jim Downing, keyboard
Pam Petersen, vocals
Margie Heart, vocals
Tony Ray, vocals
Laurie Rohrer
Jake Rohrer
Ata Damasco
Pam Poland

VOLUNTEERS

Alex Minor
Amy Chang
Andres Fisher
Anthony Rankin
Ave Diaz
Becky Kikumoto
Bobbie Becker
Brian Parker
Carol Pratt
Chandrika
Chris Mentzel
Chuck Stokesberry
Claire Cappelle
Daniel Grantham
David St. John
David Tracey-Metz
Deanna Rasmussen
Diane Shepherd
Ed Jorel Elkin
Erin Whitley
Evie Polland
Francis Saluto
Fred Spanjaard
George Shattenburg
Greg Wahl
Hannah Bernard
Harriet Witt-Miller
Heather Secord
Helen Ann Scholwalter
Jan Dapitan
Janis McMormick
Jay Griffen
Jeff Mikulina
Jennifer Stephens
Johnny Thorn
Joy Brann
Julie Douglas
Karen Stover
Kathy Marcheti
Kelli Meade
Kiva Herman
Koana Smith
Lance Holter
Lela Nickel
Liz Welter
Lotus Dancer
Lucienne de Naie
Maha Conyers
Marghi Campbell
Mark Rudd
Mark Sheehan
Martha Martin
Marty McMahon
Mele Stokesberry
Mike Foley
Miranda Camp
Nadine Newlight
Nancy Shearman
Neola Caveny
Nora Steinbrick
Pam McIsaac
Pamela Gould
Penelope Rose
Peter Kafka
Phillip Whitley
Ray Soden
Ray Soden
Rick Sands
Rob Parsons
Robin Ricards
Ron Sturtz
Saharah Dyson
Sara Patton
Sherry Reeve
Spring Manju
Stephanie Minor
Stuart d’enuff
Sun Dancer
Susan Bradford
Susanna Goodwin
Tanmayo Mentzel
Tara Grace
Terry Reim
Tina Dart
Tom Stevens
Uma Hemming
Valerie Sisneros

Thank You

Thanks to the many supporters who donated plants for Maui Group’s annual plant sale at the Ha’iku Ho’olaulea & Flower Festival. Becky Lau, Lorna Harrison, Diana Dahl, Gail Ainsworth, Martha Vockrodt, Tropical Orchid Farm, Valley Farm, Ha’iku Maui Orchids, Neola Caveny and others supplied a bounty of beautiful greenery. Dot Buck coordinated the plant sale with help from Celeste King and other MG volunteers. Jill Sullivan coordinated the MG info booth at the event.

 

Mahalos

Mahalo to Cody Gillette & Eve Moffatt who generously donated a portion of revenues from their gala March 14 CD release party at ‘Iao Theatre to Maui Group. Both are award winning musicians who care about Maui’s ‘aina.